2 862 997 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
63976740362261560117391	23	75.8	2020-08-01 22:15:50

ECM

Digits	B1	Curves
25	50000	21 / 280

Estimated T-Level: 20.4 ⓘ

TF below 2^63 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Markus Werner	C13426AA05797AEE	0
Verified (Factored)		Pete Evans	C13426AA05797AEE	0
Verified (Factored)	1999-09-22	Michael Cheney	C13426AA05797AEE	2741093

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2020-08-02	M Miller	E851E4146E70E4EC	1	647576	5	3
Verified	2020-08-02	LOBES	E851E4146E70E4EC	1	2259624	5	3

History

Date	User	Type	Result
2020-08-02	LOBES	C-PRP	M2862997/63976740362261560117391 : E851E4146E70E4EC PRP: Verified PRP without proof (not generated)
2020-08-02	M Miller	C-PRP	M2862997/63976740362261560117391 : E851E4146E70E4EC PRP: Verified PRP without proof (not generated)
2020-08-01	GAN	F-ECM	Factor: 63976740362261560117391 / (ECM curve 3, B1=50000, B2=5000000, Sigma=2352676033717745)
2019-10-24	masser	NF-PM1	B1=2870000, B2=28700000, E=12
2019-01-08	chuenkit	NF	no factor from 2^67 to 2^68
2018-08-30	Joss	NF-PM1	B1=858008, B2=2574024, E=6
2018-08-27	Joss	NF-PM1	B1=858008, B2=1716016, E=6
2017-11-12	Gordon Spence	NF	no factor from 2^66 to 2^67
2017-04-04	Joss	NF-PM1	B1=324721, B2=3247210, E=6
2017-01-10	Joss	NF-PM1	B1=225501
2016-12-19	Joss	NF-PM1	B1=187918
2016-08-25	Joss	NF-PM1	B1=156599, B2=4830000, E=6
2016-02-23	Mark Rose	NF	no factor from 2^1 to 2^60
2016-02-18	ramgeis	NF	no factor from 2^65 to 2^66
2015-04-21	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-04-21	VictordeHollander	NF	no factor from 2^63 to 2^64
2013-01-07	dbaugh	NF	no factor from 2^62 to 2^63
2012-02-03	Grant McCracken	NF	no factor from 2^61 to 2^62
2011-02-09	markr	NF-PM1	B1=115000, B2=2415000, E=6
2011-01-21	Joss	NF-PM1	B1=50000
2011-01-03	Joss	NF-PM1	B1=30000
2010-12-22	Joss	NF-PM1	B1=20000
2009-07-03	Carsten Kossendey	NF-PM1	B1=15000, B2=157500
2009-02-12	Sturle Sunde	NF	no factor from 2^60 to 2^61

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